From the diagram above, find x

  • A 65°
  • B 50°
  • C 75°
  • D 55°
jamb 2010mathematics

The correct answer is A. 65°

∠RTS = 90° (∠ in semi circle)

∠UTS = 25o (∠ in alternate segment)

X + 90 + 25 = 180(sum of ∠s on a str line)

X + 115 = 180

X = 180 - 115

X = 65°

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